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Rapid Climate Change in the Cenozoic: Insights from Geochemical Proxies
Studying the mean state and variability of past climate provides important insight into the dynamically coupled climate system, directly aiding projections of future climate. Reconstruction of past climate conditions can ...
Application of noble gas isotopic systems to identify mantle heterogeneities
This study addresses the origin of the combined He-Ne-Ar-Xe noble gas isotopic variation in mantle derived oceanic basalts. High precision heavy noble gas compositions of basalts from the Rochambeau Rift along the Northwestern ...
On the mechanisms of sulfur isotope fractionation during microbial sulfate reduction
Underlying all applications of sulfur isotope analyses is our understanding of isotope systematics. This dissertation tests some fundamental assumptions and assertions, drawn from equilibrium theory and a diverse body of ...
Volatiles in the Earth and Moon: Constraints on planetary formation and evolution
The volatile inventories of the Earth and Moon reflect unique histories of volatile acquisition and loss in the early Solar System. The terrestrial volatile inventory was established after the giant impact phase of accretion, ...